Precision cold-rolling technology is a core competence of Lamineries MATTHEY and our guaranteed dimensional tolerance limits are often tighter than stipulated in the respective European standards.

• Dimensional tolerances of non-ferrous strips and foils.
• Dimensional tolerances of stainless, maraging and non-alloyed steels strips.
• Dimensional tolerances (rods and wires).

Definitions:

Camber, edgewise curvature

The guaranteed camber is usually indicated in mm/m and is dependent on the thickness and width of the strips. Other guaranteed cambers can be calculated for other gauge lengthes (see edgewise curvature of non-ferrous strips or edgewise curvature of steels and maraging steels).

Flatness:

Evenness:

Standard tolerances for slit edge strips of Lamineries MATTHEY are + 0.2, -0 (or ± 0.1mm on request) for all widths of < 125 mm and thicknesses of < 1.00 mm. Tighter tolerances are possible on request.

For standard tolerances, the following requirements are met (reference length 1000 mm). High precision tolerances are possible on request.

Width [mm]		Camber, edgwise curvature, d [mm/m]
		LMSA standard		LMSA precision
>	≤	≤ 0.5 mm	> 0.5 mm	≤ 0.5 mm	> 0.5 mm
3	6	12	-	6	-
6	10	8	10	4	5
10	20	4	6	2	3
20	250	2	3	1	1.5

Other guaranteed cambers can be calculated for other gauge lengthes using the following equation:

     d  = guaranteed camber, given in the table for a gauge, l₀, of 1m.
     d₂ = calculated edgewise curvature in mm for a gauge, l₂.

     d₂ [mm/m] =  d [mm]  x (l₂ [mm] / 1000)²

 

The standard tolerances of Lamineries MATTHEY correspond with the tightest tolerances (precision) prescribed in European standards. The precision and extremely tight tolerances (on request) allow the production of premium quality parts. The dimensional tolerances listed in the table below refer, among others, to all copper, aluminium and nickel alloys, except for  NiCr20, NiMo16Cr15W, NiMo28.

Width (mm)		EN Standards		Lamineries Matthey SA
≥	<	10140 precision	10258 precision	LMSA standard	LMSA precision	LMSA extrem
	0.025	-	-	-	-	± 0.001
0.025	0.050	-	-	± 0.003	± 0.002	± 0.0015
0.050	0.065	-	± 0.003	± 0.003	± 0.0025	± 0.002
0.065	0.100	-	± 0.004	± 0.004	± 0.0035	± 0.003
0.100	0.125	± 0.005	± 0.006	± 0.005	± 0.004	± 0.003
0.125	0.150	± 0.005	± 0.006	± 0.005	± 0.005	± 0.004
0.150	0.250	± 0.010	± 0.008	± 0.008	± 0.006	± 0.004
0.250	0.300	± 0.010	± 0.009	± 0.009	± 0.007	± 0.005
0.300	0.400	± 0.010	± 0.010	± 0.010	± 0.007	± 0.005
0.400	0.500	± 0.015	± 0.012	± 0.012	± 0.008	± 0.006
0.500	0.600	± 0.015	± 0.014	± 0.014	± 0.010	± 0.007
0.600	0.800	± 0.015	± 0.015	± 0.015	± 0.010	± 0.007
0.800	1.000	± 0.015	± 0.018	± 0.018	± 0.012	± 0.009
1.000	1.200	± 0.020	± 0.020	± 0.020	± 0.015	± 0.012
1.200	1.250	± 0.020	± 0.020	± 0.020	± 0.015	± 0.012
1.250	1.500	± 0.020	± 0.020	± 0.020	± 0.015	± 0.014

Standard tolerances for slit edge strips of Lamineries MATTHEY are + 0.2, -0 (or ± 0.1mm on request) for all widths of < 125 mm and thicknesses of < 1.00 mm. Tighter tolerances are possible on request.

For standard tolerances, the following requirements are met (reference length 1000 mm). High precision tolerances are possible on request.

Width [mm]		Camber, edgwise curvature,  [mm/m]
		LMSA standard		LMSA extrem
>	≤	≤0.5 mm	> 0.5 mm	≤ 0.5 mm	> 0.5 mm
3	6	12	-	6	-
6	10	8	10	4	5
10	20	4	6	2	3
20	250	2	3	1	1.5

Other guaranteed cambers can be calculated for other gauge lengthes using the following equation:

     d  = guaranteed camber, given in the table for a gauge, l₀, of 1m.
     d₂ = calculated edgewise curvature in mm for a gauge, l₂.

     d₂ [mm/m] =  d [mm]  x (l₂ [mm] / 1000)²

The standard tolerances of Lamineries MATTHEY correspond with the tightest tolerances (precision) prescribed in the respective European standards. The precision and extremely tight tolerances (on request) allow the production of parts of premium quality. The dimensional tolerances listed in the table below refer, among others, to all unalloyed steels, stainless steels, maraging steels and Phynox, as well as certain special products.

Thickness (mm)		EN Standards		Lamineries Matthey SA
≥	<	10140 precision	10258 precision	LMSA standard	LMSA precision	±LMSA extrem
	0.025	-	-	-	-	± 0.001
0.025	0.050	-	-	± 0.003	± 0.002	± 0.0015
0.050	0.065	-	± 0.003	± 0.004	± 0.003	± 0.002
0.065	0.100	-	± 0.004	± 0.006	± 0.004	± 0.003
0.100	0.125	± 0.005	± 0.006	± 0.008	± 0.006	± 0.003
0.125	0.150	± 0.005	± 0.006	± 0.008	± 0.006	± 0.004
0.150	0.250	± 0.010	± 0.008	± 0.010	± 0.008	± 0.004
0.250	0.300	± 0.010	± 0.009	± 0.012	± 0.008	± 0.005
0.300	0.400	± 0.010	± 0.010	± 0.012	± 0.009	± 0.005
0.400	0.500	± 0.015	± 0.012	± 0.015	± 0.010	± 0.006
0.500	0.600	± 0.015	± 0.014	± 0.020	± 0.012	± 0.007
0.600	0.800	± 0.015	± 0.015	± 0.020	± 0.014	± 0.007
0.800	1.000	± 0.015	± 0.018	± 0.025	± 0.015	± 0.009
1.000	1.200	± 0.020	± 0.020	± 0.025	± 0.018	± 0.012
1.200	1.250	± 0.020	± 0.020	± 0.030	± 0.020	± 0.012
1.250	1.500	± 0.020	± 0.020	± 0.035	± 0.025	± 0.014

Usual tolerances			Special tolerances
≤ 3.0 mm	h8	+ 0 / - 14 µm	On request, rods and wires can be delivered with lower tolerances (h6, h5, h7) by means of additional drawing or grinding processes.
> 3.0 et ≤6.0mm	h8	+ 0 / - 18 µm
> 10.0 et ≤ 10.5mm	h8	+ 0 / - 22 µm
> 10.5 et ≤ 18.0mm	h9	+ 0 / - 43 µm
> 18.0 et ≤ 30.0mm	h9	+ 0 / - 52 µm

The heat-treated, non-ground bars are available with tolerances h9 for diameters ≤ 10.5 mm.

ISO Tolerances for rods and wires: click here.

Maximum equals half of the tolerance value of the diameter. Rods and wires with tigther tolerances are available on request.

The standard length of the rods is 3 m.

Usual values
Ø < 6.5 mm	+/- 3.3mm
Ø ≥ 6.5 mm	+/- 6.5mm

Standard rods of diameter larger than 2mm are delivered pointed and chamfered.

Straightness

Straightness of the delivered rods complies with standard EN 12164.

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